Band-saw.



A. D. PLOWDEN.

BAND SAW.

APPLICATION FILED 0013, 1913.

1,109,458. Patented Sept. 1, 1914.

a wuwboz I Ion dew THE NORRIS PETERS 60., PHOTO-LIIHQ, WASHINGTON, a. C

UNITED STATES PATENT OFFICE.

ARTHUR D. PLOWDEN, OF MELBOURNE, FLORIDA.

BAND-SAW. I i I To all whom it may concern I Be it known that I, ARTHUR'D. PLOW- DEN, a citizen of the United States, residing at Melbourne, in the county of Brevard and State of Florida, have invented new and useful Improvements in Band Saws, of which the following is a specification.

This invention relates to band saws, the object of the invention being to produce a saw blade which may be operated with far greater safety than the ordinary saw blade now in common use in that there will be very little tendency for the saw blade to be pushed off the wheels by coming in contact with projections on the work, particularly when the work is being returned to the initial end of the sawing stroke.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts, as will hereinafter be more fully described, illustrated and claimed.

In the accompanying drawings:-Figure l is a cross section through a band saw of the kind now in common use. Fig. 2 is a similar view of a band saw constructed in accordance with the present invention.

Referring to the drawings 1 designates the saw blade now in common use the same having the rear edge 2 thereof of the full width or thickness of the blade.

3 designates the saw blade of this invention and it will be observed that the rear edge of said blade is chamfered or beveled as shown at 4L, the bevel occurring on that side which is next to the log or stock from which a plank, for example, is being cut by the saw.

It is well understood that in the reverse movement of the saw carriage to the point where a cut is commenced, there is considerable danger of slabs or slivers on the log catching against the back edge of the saw and dragging the saw off the wheels of the band saw machine around which the saw runs. This resultsfrequently in great dam- Specifioation of Letters Patent.

Application filed October 3, 1913.

Patented Sept. 1, 1914.

Serial No. 793,218.

age to the saw, to the mill and also involves injury to by-standers and employees and the 'llabihty of such accidents causes the operator to exercise considerable care in feeding the carriage back and forth as he must always be on the watch out for a contingency of the kind referred to. The result of this is a considerable loss of timeowing to the great care necessarily exercised by the work men.

In the case of slivers which are of the most frequent occurrence, the nature of a sliver is to start with a small amount of proj ectio-n insufficient in itself to pull a saw on the wheels but said sliver increases or bulges more and more and the straight back saw necessarily cuts'deeper and deeper into the bulge caused bythe projecting sliver until a shoulder is formed which drags the saw ment'against thesame or the saw may be.

primarily manufactured with the bevel at the factory. 7

What I claim is A band saw blade having the rear edge thereof straight on the side remote from the work and beveled on the side next to the work to be sawed so as to tend to run out of the Work.

In testimony whereof I affix my signature in presence of twowitnesses.

ARTHUR D. PLOWDEN.

WVitnesses:

J AOK W. FA'RLEY, J. F. CAMPBELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents; Washingtoml). 0. 

